Fountain for duplicating printing machines



July 4, 1939. A. M. HARDIN FOUNTAIN FOR DUPLICATING PRINTING MACHINES 2 Sheets-Sheet 1 Filed April 12, 1938 IN V EN TOR.

A TTORNEYS.

A. M. HARDIN 2,165,139 FOUNTAIN FOR DUPLICAIING PRINTING MACHINES Filed April 12, 1958 2 Sheets-Sheet 2 .July 4, 1939.

f 6' 3 Awewlflbizndzh Patented July 4, 1939 PATENT OFFICE FOUNTAIN FOR 'D'UPLICATING PRINTING MACHINES Andrew M. Hardin, Miami, Fla.

Application April 12,

4 Claims.

This invention relates to duplicating machines of the type employing a rotary stencil drum.

The primary object of the invention is to provide a duplicating machine of this character which will be exceptionally flexible for various types of work, by constructing the ink fountain thereof in such a way that the machine may be supplied with a single fountain, or a plurality of ink fountains, to the end that printing in various colors longitudinally of a sheet, may be accomplished with facility.

Another object of the invention is to provide a fountain divided into a plurality of lateral compartments, whereby multi-color printing trans- 15. versely of the sheets being printed, may be effectively carried out with a single fountain.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein described, may be made within the scope of what is claimed,

without departing from the spirit of the invention.

In the drawings:

Figure l is a perspective View of the stencil drum, constructed in accordance with the present invention.

Figure 2 is a longitudinal sectional view through the drum and one of the fountains carried by the drum.

Figure 3 is an end elevational view of the drum.

Figure 4 is a sectional View taken on line 4-4 of Figure 2.

Figure 5 is a view illustrating the construction of the heads or end members of the drum.

Figure 6 is a sectional view through the drum showing one exceptionally large fountain as supported thereby.

Figure '7 is a longitudinal sectional view through a modified form of fountain.

Figure 8 is a segmental plan View of one of the blanks used in filling the space between adjacent fountains.

Figure 9 is an end elevational View thereof.

Figure 10 is a fragmental plan View of a modified form of blank, in which the blank is shown as wider than the blank illustrated by Figure 8 of the drawings.

Figure 11 is an end elevational view of the blank shown by Figure 10 of the drawings.

Referring to the drawings in detail, the drum comprises head end members 5 which in the 1938, Serial No. 201,586

present showing embodies substantially wide metallic ring members held in proper spaced relation with respect to each other, by means of the spacing, rods 6 that extend into openings in the heads, the rods being held in position within the openings of the heads, by means of screws 1 that extend through openings in the heads and pass into threaded bores in the ends of the spacing rods 6.

As clearly shown by Figure 5 of the drawings, these heads 5 are substantially thick throughout portions of their circumferences, the thickened portions being slightly recessed, for the reception of the curved laterally extended flanges 8, formed on the fountains, to be hereinafter more fully described. It might be further. stated that these recesses are of thicknesses equal to the thicknesses of the flanges 3, so that the outer surfaces of the flanges will lie flush with the outer surfaces of the head 5, when positioned in the recesses.

Semi-circular end plates 9 are secured to the heads 5, by means of the screws 1, the semi-circular plates 5 being formed with inwardly extended flanges H), overlying portions of the peripheries of the heads 5, as clearly shown by Fi ure lof the drawings- Ears H are formed on the plates 9 and are formed with openings for the supporting shaft on which the drum is to be supported.

Pivotally connected with each semi-circular plate 9, is a semi-circular plate l2, the plates l2 being also provided with inwardly extended flanges l3 adapted to overlie the recesses formed in the thickened portions of the heads 5, the plate l2 being formed with notches M to receive the bolts i5 carried by the plate 5, for securing the plates 9 and 12 together, and prevent the plates i2 from moving to their open or inactive positions, under normal conditions.

As previously stated, the drum is designed for supporting one or a plurality of fountains which supply ink to the usual felt and stencil, positioned on the drum. Each of these fountains comprises inclined side walls 15 connected at their outer ends by means of the curved apertured plates H, the apertures being provided so that the ink may pass from the fountains to the felt and stencil supported directly thereover. The flanges 8 of the fountains, are of widths equal to the widths of the outer surfaces of the fountains, and conform to the curvatures of the outer surfaces of the fountains to support the fountains against movement, when the pivoted plates l2 have been moved to engage the flanges 8, as shown by Figure 2' of the drawings. Filling openings indicated by the reference character H, are provided and afford means whereby the ink may be passed into the fountains. These filling openings are closed by means of threaded stops it], which are shown as positioned thereon.

In theform of the invention as illustrated by Figure 7 of the drawings, I have shown a fountain which is exceptionally large, and provided with a sectional partition I9, dividing the fountain into lateral compartments for the reception of various colored ink. Flanges 22 are also provided on this fountain so that the fountain may be held within the recesses of the heads 5, in amanner as previously described. Thus it will be seen'that due to this construction, it is possible to print with various colors so that the various colored printing will appear transversely of the sheet being printed. While I have shown a fountain with only one of these partitions l9, it is to be under- 1 stood that it is within the scope of the invention to provide any desired :number of partitions to the end that "a great number of various colors maybe used in printing transversely of a sheet.

For straight one color printing, and, for printing on the entire surface of a sheet, a fountain such as indicated by Figure 6 of the drawings is used, in which case the fountain is substantially large, and fills practically the entire space on the drum, directly under the stencil or printing surface of the drum. V L

, .Should it be desired-to print sheets with multicolors arranged longitudinally of the sheets, a plurality of smaller. fountains such as shown by Figure.4 of the drawings, may be: positioned on i the drum, and held between the heads in a man her. as described. Each fountain ,may contain in desired color, and it is obvious that as the drum rotates, the various colored ink will pass through the perforations in the outer surfaces of the fountain, and will print particular sections of the sheet, withthe desired varying colors. Should it be desired. to use the devicefor, printing short letters on smallformsor the like, fountains to supply thenecessary quantity of ink, are secured within the drum. The spaces atthe outer side edges of the fountains are closedby mean'scf the blanks and 2|. In connection with thes blanks, it might be stated thatthe blanks are of various widths so that the felt and stencil supported on the drum, will be supported throughout the length thereof while in use. Due to the construction shown and described, it will be seen that I have provided a duplicating machine which is exceptionally flexible for various types of work, and have designed means whereby'the usual duplicating machine may be effectively employed in multi-color printing both longitudinally and transversely of sheets.

Having thus described the invention, what is claimed is:

" '1; The combination with the stencil drum of a duplicatingprinting machine, of a plurality of ink fountains mounted on the machine and adapted to supply ink to a pad and stencil secured on the drum, blanks adapted to be fitted on the drumbetween adjacent fountains closing the spaces between said fountains, and means for removably securing the fountainsand blanks in position, 7 a

2. In a duplicating machine, a rotary stencil drumembodying spaced heads, said heads having recesses, ink fountains, flanges extending laterally from the ends of the fountains and adapted to rest in. the recesses, and a means for clamping the flangesin the recesses removably securing the fountains on the drum.

3; In a duplicating printing machine, a rotary stencil drum embodying spaced heads having grooves, ink fountains, flanges extending from the fountains and fitted; in the grooves, and

means for clamping the flanges to the heads or removably securing the fountains. on the drum.

4. In a duplicating printing machine, a rotary stencil drum embodying spaced heads having curved recesses formed. along the inner edges thereof, removable fountains, flanges extending beyond the ends of the fountains and adapted to rest in the recesses, and clamping members adapted to engage the flanges clamping the flanges. inthe recesses, removably securing the fountains'on the drum. g

ANDREW M. HARDIN. 

